Presentation Title
James FillonTerence SmithAdvanced Geometry Techniques With MSC
PatranCAE Solid Modeling & More
MSC Software Confidential Enhanced Geometry TechniquesCAE Solid
ModelingGeometric primitives creationGeometric boolean
operationsMid-Surface extractionsSurface trimmingEdge blending
(chamfer, constant radius etc)Create thin walled solidsFeature
recognition/deletion/editingConvert sgm geometry to parasolidAuto
update of cae data after solid editingRequires parasolid modeling
licenses
MSC Software Confidential Enhanced Geometry TechniquesEnhanced
Surface Modeling TechniquesOffsetting surfaces and curvesAdvanced
trimmed surface editingAdding fillets / removing filletsSurface
subtractionsEnhanced surface extension techniquesParametric
surfaces
MSC Software Confidential CAE Solid ModelingGeometric
Primitives
MSC Software Confidential CAE Solid ModelingGeometric
Primitives
Cylinder and cone primitives canbe given an optional thickness
dimension to create tubesMSC Software Confidential CAE Solid
ModelingOn The Fly Booleans With Primitives
Automatic CAE update (mesh and lbcs) is on by default. The
setting can be controlled through Preferences/Geometry.MSC Software
Confidential CAE Solid ModelingAutomatic Mesh/LBC Update
Control4/16/20126
MSC Software Confidential CAE Solid ModelingGeometric
Booleans
Automatic CAE updateMSC Software Confidential CAE Solid
ModelingCreate/Solid/Revolve
Previous versions of patran only allowed Create/Solid/Revolve
for simple 3 and 4 sided (green) surfaces (iso-meshable
solids)Tet-meshableorIso-meshableSolid TypesMSC Software
Confidential CAE Solid ModelingCreate/Solid/Extrude
Tet-meshableorIso-meshableSolid TypesPrevious versions of patran
only allowed Create/Solid/Extrude for simple 3 and 4 sided (green)
surfaces (iso-meshable solids)
MSC Software Confidential CAE Solid ModelingEdit/Solid/Shell
Solid 1.1Carves out material up to thedefined wall thickness
startingfrom the face selected.MSC Software Confidential CAE Solid
ModelingEdit/Solid/Edge Blend
Constant RadiusorChamferSelect edges, all edges associated to a
surfaceor all edges.
Constant RadiusChamferMSC Software Confidential CAE Solid
ModelingEdit/Solid/Imprint
Solid 1Solid 2
Solid 1.1Solid 1.7Automatic mesh andlbc updateMSC Software
Confidential CAE Solid ModelingExpedite high quality meshing with
solid imprintingMatch parasolid faces to insure mesh
congruency4/16/201213
MSC Software Confidential CAE Solid ModelingMid-Surface
ExtractionsCreate/Surface/Midsurface
Allows for both automaticand manual creation of mid-surfacesMax
t = 0.1The max thickness should be slightly larger thanthe max
thickness of the solid.MSC Software Confidential Mid-surface
Extraction: AutomaticIn the automatic mode, the choice of the
maximum thickness is important. This value is used to create
specific mid-surfaces at/or under a specific thickness.Too large a
thickness can produce very skewed surfaces. The mid-surfaces may
not be in the wall of the solid selected or not look as
expected.Too small a thickness may miss some contours or features
created by varying wall thickness.The mid-surfaces created by this
option are not always congruent. Additional surface editing may be
required to ensure a congruent mesh (Edit/Surface/Sew).
MSC Software Confidential Mid-surface Extraction: ManualThe
manual mode allows more control over the mid-surfaces one wishes to
create.Manual mid-surface extraction works by selecting the two
solid faces between which you want the mid-surface.
MSC Software Confidential Mid-surface Extraction:
TrimmingMid-surface trimming allows the modification of common
mid-surface protrusions or unwanted surface area
Imported solid model with gussetAutomatic mid-surface of the
gussetGusset mid-surface after trimmingMSC Software Confidential
Mid-surface Extraction: Trimming
Remove this extra sliver off of the gussetMSC Software
Confidential Mid-surface ExtractionDuring automatic mid-surface
extraction, MSC Patran automatically converts (refits)
non-Parasolid geometry to Parasolid geometry prior to creating the
mid-surfaces.During manual mid-surface extraction, MSC Patran does
not automatically convert (refit) non-Parasolid geometry to
Parasolid geometry. The user needs to convert non-Parasolid
geometry to Parasolid geometry via Edit/Solid/Refit prior to
creating the mid-surfaces.
MSC Software Confidential Direct Mid-Surface MeshingMid-Surface
MesherSingle step creation of a mid-surface mesh on a solid
partIntended for bent sheetbodyDoes not work for tee type
junctionsExamples of parts that can be mid-surfaced meshed
MSC Software Confidential
Mid-Surface Mesher (pre-release)
Tools/Pre-Release/Midplane Meshgeometrymid-surface meshMSC
Software Confidential CAE Solid ModelingFeature
RecognitionRecognize geometric entities such as holes, chamfers and
blends as features for easy editing and deleting
MSC Software Confidential CAE Solid ModelingAutomatic Feature
Recognition
Automatically recognize holes chamfers and edge blends
Features are highlighted and stored in the db
MSC Software Confidential CAE Solid ModelingInteractive Feature
Recognition
Select solid faces or edges
MSC Software Confidential CAE Solid ModelingDeleting Recognized
Features
Select features to be deleted
MSC Software Confidential CAE Solid ModelingEditing Features
MSC Software Confidential CAE Solid ModelingShow Feature
Attributes
Select features to show
MSC Software Confidential 28Advanced Surface Modeling Techniques
With MSC Patran MSC Software Confidential Enhanced Surface/Curve
ModelingCreate/Curve/Offset
Offset direction can be reversedConstant OffsetOffset Direction
VectorMSC Software Confidential Enhanced Surface/Curve
ModelingCreate/Curve/Offset
The offset direction for a straight curve is ambiguous.
Therefore the specification of a direction vector is necessary MSC
Software Confidential Enhanced Surface/Curve
ModelingCreate/Curve/Offset
= 0.0 = 1.0
Variable offset based on parametric curve locations. (default =
0 and 1)MSC Software Confidential Enhanced Surface/Curve
ModelingCreate/Curve/Offset
= 0.5 = 1.0Variable offset based on parametric curve
locationsMSC Software Confidential Enhanced Surface/Curve
ModelingCreate/Surface Offset
Option for selecting a guidingsurface for surface normals when
offsetting multiple surfaces.MSC Software Confidential Enhanced
Trimmed Surface EditingEdit/Surface/Add Fillet
MSC Software Confidential Enhanced Trimmed Surface
EditingEdit/Surface/Edge: Remove EdgeOption for specifying
specificedges to remove or all edgesshorter than the supplied
minimum edge length
MSC Software Confidential Enhanced Trimmed Surface
EditingEdit/Surface/Edge: Add Edge
MSC Software Confidential Enhanced Trimmed Surface
EditingEdit/Surface/Edge: Replace Edge
MSC Software Confidential Enhanced Trimmed Surface
EditingEdit/Surface/Remove VertexRemove a vertex from a trimmed
surface Allows for user control for modifying all associated
surfaces or selected surfaces
MSC Software Confidential Enhanced Trimmed Surface EditingEdit
Surface Subtract
Surface 1Surface 2MSC Software Confidential Enhanced Surface
Editing: ExtensionEdit/Surface/ExtendIntersection of two
surfacesExtend one surface to anotherIntersection of surface and
curveIntersection of surface and planeIntersection of surface and
pointPercentage of u and vFixed length
Option to edit all associated surfaces or selected surfaces
MSC Software Confidential Enhanced Surface Editing:
ExtensionEdit/Surface/Extend: Intersection of two surfaces
Surface 1.3Surface 4.3MSC Software Confidential Enhanced Surface
Editing: ExtensionEdit/Surface/Extend: One surface to another
Surface 1Surface 3.4Surface 4Surface 5Option to break the
intersectingsurface at the line of intersectionMSC Software
Confidential Enhanced Surface Editing:
ExtensionEdit/Surface/Extend: Intersection of surface and curve
Surface 1.3Surface 2.2MSC Software Confidential Enhanced Surface
Editing: ExtensionEdit/Surface/Extend: Intersection of Surface and
plane
MSC Software Confidential Enhanced Surface Editing:
ExtensionEdit/Surface/Extend: Intersection of surface and a
point
Point does not have liein the plane of the surfaceMSC Software
Confidential Enhanced Surface Editing:
ExtensionEdit/Surface/Extend: Percantage of u and v
100% extension from u=150% reduction from v=1MSC Software
Confidential Enhanced Surface Editing:
ExtensionEdit/Surface/Extend: Fixed Length
MSC Software Confidential Parametric Surfaces
(P-Shapes)Parameterized Shapes:Create & edit based on common
geometric dimensions (diameter, radius, height, start angle,
etc.)Mesh + apply LBCs same as other MSC.Patran
surfacesParameterized shape parameter definitions are stored in the
MSC.Patran database for parametric design & rapid editingFEM
updated automatically when geometric parameters are modified
4/16/201248
MSC Software Confidential Parametric Surfaces
(P-Shapes)4/16/201249
MSC Software Confidential Thank You!!MSC Software
Confidential
